Anyone tare their motor down after a maintenance schedule with long oil change intervals? I get that oils have good add packs and will last longer but does the extended drain end up with more sludge? Looks like 5000 miles would be long enough to not be waistful but short enough to keep your motor clean. I'm no engineer or lube specialists so educate if you will.
Motor teardown?
- Thread starter Sealbilly
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The only sludge found in oil today is if you never change the oil....ever! Modern oils are that good. 7.5k in summer 5k in winter, sludge is a thing of the past.
It is "Tear" Billy, not tare!
It is "Tear" Billy, not tare!
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Maybe he wants to know if anyone adds their oil by weight? I don't know how there'd be any more or less waist over filling by volume... Sorry, OP.
Originally Posted By: Sealbilly
does the extended drain end up with more sludge?
It took you 150 posts to get to this?!?
does the extended drain end up with more sludge?
It took you 150 posts to get to this?!?
The shortest interval I use is 7500 on all 3 of mine and they look like this:
https://www.bobistheoilguy.com/forums/ubbthreads.php/topics/4736809/
Not a teardown, but if there's no sludge on the top end, probably not going to be any on the bottom. Actually, I know there isn't as I had the wifes oil pan off do do a gasket and it was as clean as the top, I just didn't get any pictures of it.
https://www.bobistheoilguy.com/forums/ubbthreads.php/topics/4736809/
Not a teardown, but if there's no sludge on the top end, probably not going to be any on the bottom. Actually, I know there isn't as I had the wifes oil pan off do do a gasket and it was as clean as the top, I just didn't get any pictures of it.
Nick1994
$100 site donor 2024
Modern cars with current synthetics aren't gonna sludge unless you're doing 20,000+ mile intervals. Or unless you're doing really short trips and it might take 5 years to hit 10-15k miles.
Even at 20k it might not get sludgy.
Even at 20k it might not get sludgy.
So many comments about no sludge, but Bill is asking about motors ready for tear down ... That usually means over 200K and blow-by gasses, etc. It can get ugly that last 50K as the engine gets tired... Sludge is all about chemistry and and condensing out volatiles.
Carb'd engine, multi-port FI, bank fired EFI, what op temp, short trips, lots of cold starts, E-85 ... Need to know more about the engine in question ...
Carb'd engine, multi-port FI, bank fired EFI, what op temp, short trips, lots of cold starts, E-85 ... Need to know more about the engine in question ...
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Originally Posted By: Sealbilly
Anyone tare their motor down after a maintenance schedule with long oil change intervals? I get that oils have good add packs and will last longer but does the extended drain end up with more sludge? Looks like 5000 miles would be long enough to not be waistful but short enough to keep your motor clean. I'm no engineer or lube specialists so educate if you will.
I have not done it, and am not aware of any that have been done.
The engine teardowns on YouTube all show either a sludged engine that did not change oil, or a 1,000,000 mile (1.610.000km) teardown after changes of about 8000 mi (12000km).
Anyone tare their motor down after a maintenance schedule with long oil change intervals? I get that oils have good add packs and will last longer but does the extended drain end up with more sludge? Looks like 5000 miles would be long enough to not be waistful but short enough to keep your motor clean. I'm no engineer or lube specialists so educate if you will.
I have not done it, and am not aware of any that have been done.
The engine teardowns on YouTube all show either a sludged engine that did not change oil, or a 1,000,000 mile (1.610.000km) teardown after changes of about 8000 mi (12000km).
OVERKILL
$100 Site Donor 2021
Member Doug Hillary did extended oil drain testing in the Australian outback in land trains (OTR trucks) with periodic inspection tear downs. The pics of many key components out of the Detroit Diesel in one of the rigs were posted on here a few years ago with 1.2 million Km on them. The parts were put back into service after the inspection.
Originally Posted By: BrocLuno
So many comments about no sludge, but Bill is asking about motors ready for tear down ... That usually means over 200K and blow-by gasses, etc. It can get ugly that last 50K as the engine gets tired... Sludge is all about chemistry and and condensing out volatiles.
Carb'd engine, multi-port FI, bank fired EFI, what op temp, short trips, lots of cold starts, E-85 ... Need to know more about the engine in question ...
Just a general question. But I have 3 trucks all with the LS platform V8 chevy motors. I had the pan off of one I bought as a project truck that has 314k on it and it had a little baked on stuff on the pan and that's about it but I don't know what the guy that owned it before me did in the way of oil changes. I also had a Nissan hardbody I put new timing system in and it was the dirtiest valve train I had ever laid eyes on. I don't know how it got oil on everything. Also don't know the maintenance schedule the previous owner used if one at all.
So many comments about no sludge, but Bill is asking about motors ready for tear down ... That usually means over 200K and blow-by gasses, etc. It can get ugly that last 50K as the engine gets tired... Sludge is all about chemistry and and condensing out volatiles.
Carb'd engine, multi-port FI, bank fired EFI, what op temp, short trips, lots of cold starts, E-85 ... Need to know more about the engine in question ...
Just a general question. But I have 3 trucks all with the LS platform V8 chevy motors. I had the pan off of one I bought as a project truck that has 314k on it and it had a little baked on stuff on the pan and that's about it but I don't know what the guy that owned it before me did in the way of oil changes. I also had a Nissan hardbody I put new timing system in and it was the dirtiest valve train I had ever laid eyes on. I don't know how it got oil on everything. Also don't know the maintenance schedule the previous owner used if one at all.
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Originally Posted by Sealbilly
I have memory loss and can't retain newer information. I forget what I have asked and what replays I have gotten. If it's not something I learned or an event that happened long ago I don't retain it. It sucks.
That sucks. I have memory issues with newer stuff also. Maybe not as bad as you and it affects anything automotive way less than other stuff... But I remember things from when I was 5 years old but not last week. Don't feel bad. It happens to a lot of people. I know this thread is old, hopefully you still follow it.
I have memory loss and can't retain newer information. I forget what I have asked and what replays I have gotten. If it's not something I learned or an event that happened long ago I don't retain it. It sucks.
That sucks. I have memory issues with newer stuff also. Maybe not as bad as you and it affects anything automotive way less than other stuff... But I remember things from when I was 5 years old but not last week. Don't feel bad. It happens to a lot of people. I know this thread is old, hopefully you still follow it.
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